Kinetics and Mechanism of Pyridinolyses of Aryl Methyl and Aryl Propyl Chlorothiophosphates in Acetonitrile
作者:Hasi Rani Barai、Hai Whang Lee
DOI:10.5012/bkcs.2014.35.2.483
日期:2014.2.20
Constants ( k 2 × 10 3 /M –1 s –1 ) at 35.0 o C, NBO Charges at the Reaction Center P Atom,Summations of the Steric Constants and Selectivity Parameters ( X and XY ) for the Reactions of 1 - 11 with X-Pyridines in MeCNno R 1 OR 2 O k 2 × 10 3 a charge at P – E S X e XY 1 MeO MeO 1.54 c 1.687 0 1.09/0.20 – 2 MeO EtO 0.620 1.693 0.07 1.50/0.43 – 3 EtO EtO 1.19 c 1.701 0.14 1.02/0.29 – 4 EtO PrO 0.609
14/–1.02/–0.04 fa 35.0 o C 时 X = H 的值。 b Y = H 的值。 c 外推值。d 经验动力学数据。e 强/弱碱性吡啶。